Its already trading on many exchanges, I only notice this yesterday when I look into the prices. Everyone is moving their money to stablecoins so this Dai surfaces. Didn't bother to check it though but why is your popular Atomars exchange pairing the two USDT/DAI, weren't they all stablecoin pegged in USD?
They are pegged to ETH valued in USD, and it's collaterized, which means that for every 1 DAI (1 USD) created you usually collaterized > 1.5 USD worth of ETH.